/* ─── IMPRESIONES 3D ─── */
#impresiones-3d{background:rgba(5,9,20,.88);border-top:1px solid var(--border)}
#impresiones-3d::before{content:'';position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse 55% 45% at 85% 15%,rgba(249,115,22,.08) 0%,transparent 65%),
             radial-gradient(ellipse 45% 40% at 10% 90%,rgba(124,58,255,.07) 0%,transparent 65%)}
.p3d-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:36px}
.p3d-head .sec-sub{margin-bottom:0;max-width:620px}
.p3d-cta{flex-shrink:0}

.p3d-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.p3d-item{
  position:relative;display:block;padding:0;border:1px solid var(--border);border-radius:14px;overflow:hidden;
  aspect-ratio:1/1;background:#0b1224;transition:transform .3s,border-color .3s,box-shadow .3s;
}
.p3d-item img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s ease}
.p3d-item:hover{transform:translateY(-4px);border-color:rgba(249,115,22,.6);box-shadow:0 12px 40px rgba(249,115,22,.15)}
.p3d-item:hover img{transform:scale(1.06)}
.p3d-cap{
  position:absolute;left:0;right:0;bottom:0;padding:28px 14px 12px;text-align:left;
  background:linear-gradient(transparent,rgba(5,9,20,.92));color:#fff;font:600 .85rem 'Inter',sans-serif;
}
.p3d-empty{text-align:center;padding:48px 20px;border:1px dashed var(--border);border-radius:16px;color:var(--muted)}
.p3d-empty span{font-size:2.6rem;display:block;margin-bottom:10px}

.p3d-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:28px}
.p3d-steps div{display:flex;align-items:center;gap:12px;padding:16px;border:1px solid var(--border);border-radius:var(--r);background:var(--glass);font-size:.86rem;color:var(--text)}
.p3d-steps b{
  width:34px;height:34px;flex-shrink:0;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#f97316,var(--neon-vio));color:#fff;font-family:'Orbitron',monospace;font-size:.9rem
}

/* visor */
.p3d-lightbox{position:fixed;inset:0;z-index:320;background:rgba(2,5,12,.94);display:none;align-items:center;justify-content:center;padding:20px 64px}
.p3d-lightbox.open{display:flex}
.p3d-lightbox figure{max-width:min(1100px,100%);max-height:100%;display:flex;flex-direction:column;gap:12px}
.p3d-lightbox img{max-width:100%;max-height:calc(100vh - 150px);object-fit:contain;border-radius:12px;align-self:center}
.p3d-lightbox figcaption{display:flex;justify-content:space-between;align-items:center;gap:16px;color:#fff}
.p3d-lightbox figcaption strong{font-size:1rem}
.p3d-lightbox figcaption p{font-size:.85rem;color:var(--muted);margin-top:2px}
.p3d-lb-wa{flex-shrink:0;padding:10px 18px;border-radius:50px;background:#25d366;color:#fff;text-decoration:none;font-weight:700;font-size:.88rem}
.p3d-nav{position:absolute;width:48px;height:48px;border-radius:50%;border:1px solid var(--border);background:rgba(255,255,255,.06);color:#fff;font-size:1.6rem;line-height:1}
.p3d-nav:hover{border-color:var(--neon-cyan);background:rgba(0,212,255,.1)}
.p3d-close{top:16px;right:16px;font-size:1.1rem}
.p3d-prev{left:10px;top:50%;transform:translateY(-50%)}
.p3d-next{right:10px;top:50%;transform:translateY(-50%)}
.p3d-count{position:absolute;top:26px;left:24px;color:var(--muted);font-size:.8rem}

@media(max-width:760px){
  .p3d-grid{grid-template-columns:repeat(2,1fr);gap:8px}
  .p3d-steps{grid-template-columns:1fr}
  .p3d-cta{width:100%;justify-content:center}
  .p3d-lightbox{padding:60px 10px 20px}
  .p3d-prev,.p3d-next{top:auto;bottom:18px;transform:none}
  .p3d-lightbox img{max-height:calc(100vh - 220px)}
  .p3d-lightbox figcaption{flex-direction:column;align-items:flex-start;padding:0 4px 60px}
}